Huge lag on playback

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  • Updated 3 years ago
Basically, whenever I want to edit a video that had actual 'video' in it, like for example one of my Space Engineers videos, I have an insane amount of lag. Like, I hit play *waits 10 seconds* *repeats the same small section of audio like I say bird and it says 'birbirbirbir* and then it moves 1 or 2 frames. Then repeat. It's super annoying, can someone help? :((
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Finley Knapman

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  • frustrated

Posted 3 years ago

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Timbre4, Champion

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Hello,

Sounds like you may have a VBR (variable bit rate) file instead of a CBR (constant but rate) file. I've seen multiple recommendations to use HandBrake to convert it; information and download here: http://www.wondershare.net/ad/video-converter-ultimate/index_both.html?gclid=CjwKEAjwxoG5BRCC7ezlzNm...


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Finley Knapman

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I'd rather not convert a 1.5 hour video in 720p 60fps. Is there no way I can change the preview window for for example 1/3 preview like premiere or vegas?
Edit:
I'd just like to point out how frustrating this is. I have skipped editing a perfectly good video because of this issue. It used to work fine until a few days ago.
(Edited)
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Timbre4, Champion

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60fps? Of course not, knowing that. People tend to show up with much smaller clips.

Since you now say it worked before, proceeding with a Support ticket would make more sense:

TechSmith Support Information

http://support.techsmith.com/

Phone: +1.517.381.2300
Toll Free: 800.517.3001
(U.S. & Canada Only)
8:00 AM to 7:00 PM EST Monday through Friday

(Edited)
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Finley Knapman

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Allright. Thanks. I am now trying that handbrake suggestion. I think I may have been a bit stupid not to explore every venture. I'll keep you posted. If all else fails I'll contact support.
Cheers Timbre, I appreciate it
edit:
the good thing about this program is I can select sections of it. therefore I can cut the 1.5hr session into 20m or so :)
(Edited)
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Dave O'Rourke, Senior Software Engineer

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I suspect it's the 60fps source. The decoding of the video happens on multiple threads, but is done in software, and 60fps simply is too many fps for the real-time preview to keep up. You'll likely have much better luck with a 30fps source video.

Camtasia Studio 8.x came out in 2012, and there were very few 60fps cameras at that time. Obviously, things have changed since then, and we're working to improve the performance for future releases. In the meantime, you could downsample your original 60fps video to 30fps, and that should be more responsive on the timeline.
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Vitus Polikarpus

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This problem occurs usually in the cut video. I overcame this problem by performing two times the editing process. The first edit process specially cut piece of video that are not needed, then produced. Furthermore edited again to make the process of subsequent edits such as adding a callout or zoom and caption
(Edited)